Which of the following characteristics does an arthropod have? segmentation endoskeleton jointed appendages notochord coelom tissues, organs, and organ systems

Arthropods have segmentation , jointed appendages, coelom, tissues, organs and organ systems.

Explanation:

Arthropods are divided into segments, they are called metameric, however in some classes like crustaceans this segmentation is reduced, an example of the segments are head, thorax and abdomen.

Arthropods don´t have endoskeleton, they have exoskeleton, it is the outer covering ah provides support and protection.

The arthropod body consists of segments, each with a pair of appendages.

Arthropods have nervous, muscular, circulatory, and excretory systems with organs and tissues.

They are animals with coelom, in arthropods the coelom is reduced to a small compartment surrounding the reproductive and excretory organs.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.